Commstones should be twice as long as the width of the longest flat spot and as long as will work freely between adjacent brush sets.1-1/8 in X 1/2 in X 5/16 in, Grade F Loose Stone, Commstone, Small Motor Combination When compared to turning tools commstones are easier to use, more time effective, and remove less copper..
3/8 in X 1/2 in X 6 in, Grade M, Commstone, Pencil Type When compared to turning tools commstones are easier to use, more time effective, and remove less copper..
Piston Type Pressure Snubber, 1/2 NPT, Brass, Pressure Rating 6,000 PSI Five different sized pistons included with each snubber to ensure the correct amount of snubbing for virtually every application..